Method, device, and medium for video processing

Abstract

Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: applying, during a conversion between a target video block of a video and a bitstream of the video, a multi-hypothesis prediction process for the target video block based on a plurality of motion candidates from a non-regular merge list; and performing the conversion based on a result of the multi-hypothesis prediction process. Compared with the conventional solution, the proposed method can advantageously improve the coding efficiency and performance.

1 - 17 . (canceled) 
     
     
         18 . A method for video processing, comprising:
 applying, during a conversion between a target video block of a video and a bitstream of the video, a multi-hypothesis prediction process for the target video block based on a plurality of motion candidates from a non-regular merge list; and   performing the conversion based on a result of the multi-hypothesis prediction process.   
     
     
         19 . The method of  claim 18 , wherein derivation of a plurality of hypothetic predictions in the multi-hypothesis prediction process is based on a motion vector list construction process. 
     
     
         20 . The method of  claim 18 , wherein applying the multi-hypothesis prediction process comprises:
 generating a plurality of hypothetic predictions for the target video block based on the non-regular merge list.   
     
     
         21 . The method of  claim 18 , wherein applying the multi-hypothesis prediction process comprises:
 generating a plurality of hypothetic predictions for the target video block based on an available motion vector list different from a regular merge list.   
     
     
         22 . The method of  claim 18 , wherein applying the multi-hypothesis prediction process comprises:
 generating a plurality of hypothetic uni-predictions for the target video block.   
     
     
         23 . The method of  claim 18 , wherein the conversion comprises encoding the target video block into the bitstream. 
     
     
         24 . The method of  claim 18 , wherein the conversion comprises decoding the target video block from the bitstream. 
     
     
         25 . An apparatus for processing video data comprising a processor and a non-transitory memory with instructions thereon, wherein the instructions upon execution by the processor, cause the processor to:
 apply, during a conversion between a target video block of a video and a bitstream of the video, a multi-hypothesis prediction process for the target video block based on a plurality of motion candidates from a non-regular merge list; and   perform the conversion based on a result of the multi-hypothesis prediction process.   
     
     
         26 . The apparatus of  claim 25 , wherein derivation of a plurality of hypothetic predictions in the multi-hypothesis prediction process is based on a motion vector list construction process. 
     
     
         27 . The apparatus of  claim 25 , wherein the instructions upon execution by the processor, cause the processor to apply the multi-hypothesis prediction process by:
 generating a plurality of hypothetic predictions for the target video block based on the non-regular merge list.   
     
     
         28 . The apparatus of  claim 25 , wherein the instructions upon execution by the processor, cause the processor to apply the multi-hypothesis prediction process by:
 generating a plurality of hypothetic predictions for the target video block based on an available motion vector list different from a regular merge list.   
     
     
         29 . The apparatus of  claim 25 , wherein the instructions upon execution by the processor, cause the processor to apply the multi-hypothesis prediction process by:
 generating a plurality of hypothetic uni-predictions for the target video block.   
     
     
         30 . The apparatus of  claim 25 , wherein the conversion comprises encoding the target video block into the bitstream. 
     
     
         31 . The apparatus of  claim 25 , wherein the conversion comprises decoding the target video block from the bitstream. 
     
     
         32 . A non-transitory computer-readable storage medium storing instructions that cause a processor to perform acts comprising:
 applying, during a conversion between a target video block of a video and a bitstream of the video, a multi-hypothesis prediction process for the target video block based on a plurality of motion candidates from a non-regular merge list; and   performing the conversion based on a result of the multi-hypothesis prediction process.   
     
     
         33 . The non-transitory computer-readable storage medium of  claim 32 , wherein derivation of a plurality of hypothetic predictions in the multi-hypothesis prediction process is based on a motion vector list construction process. 
     
     
         34 . The non-transitory computer-readable storage medium of  claim 32 , wherein applying the multi-hypothesis prediction process comprises:
 generating a plurality of hypothetic predictions for the target video block based on the non-regular merge list.   
     
     
         35 . The non-transitory computer-readable storage medium of  claim 32 , wherein applying the multi-hypothesis prediction process comprises:
 generating a plurality of hypothetic predictions for the target video block based on an available motion vector list different from a regular merge list.   
     
     
         36 . The non-transitory computer-readable storage medium of  claim 32 , wherein applying the multi-hypothesis prediction process comprises:
 generating a plurality of hypothetic uni-predictions for the target video block.   
     
     
         37 . The non-transitory computer-readable storage medium of  claim 32 , wherein the conversion comprises encoding the target video block into the bitstream, or
 wherein the conversion comprises decoding the target video block from the bitstream.